About Time Tools
A fast, private, and beautifully crafted suite of 20 temporal utilities built for everyday work, focus, and cross-timezone collaboration.
What is Time Tools?
Time Tools (time.sji.one) is a collection of browser-based utilities dedicated strictly to clocks, countdowns, temporal calculations, timestamps, and global scheduling. Whether you need an accurate full-screen digital clock for your desk, a millisecond-precision stopwatch with lap exports, a Pomodoro focus interval timer, or a visual international meeting planner, Time Tools delivers an instant, ad-free experience.
Client-First Architecture & Privacy
Every tool on Time Tools runs entirely in your browser. We adhere to a strict client-side model:
- Zero Tracking & No Ads: We do not track your usage, sell your data, or serve invasive advertisements.
- Local State Persistence: Your timer settings, custom countdown presets, alarms, favorite timezones, and theme preferences are saved securely in your browser's
localStorage. - No Backend Dependency: Clocks, epoch converters, DST explorers, and formatters execute natively with JavaScript and browser temporal APIs.
- Fast & Static: Pages are statically generated for instant loading, full crawlability, and zero runtime overhead.
Explore the 20 Tools
Our tools are categorized into four specialized groups to help you find exactly what you need:
Converters
Convert and calculate timestamps, units, and temporal values
Planning
Plan across schedules, calendars, business days, and timezones
Part of the SJI Network
Time Tools is built and maintained as part of the SJI network of focused, lightweight web products designed for everyday productivity: